2,060 research outputs found

    The 1961 Kampong Bukit Ho Swee fire and the making of modern Singapore

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    By 1970, Singapore’s urban landscape was dominated by high-rise blocks of planned public housing built by the People’s Action Party government, signifying the establishment of a high modernist nation-state. A decade earlier, the margins of the City had been dominated by kampongs, home to semi-autonomous communities of low-income Chinese families which freely built, and rebuilt, unauthorised wooden houses. This change was not merely one of housing but belied a more fundamental realignment of state-society relations in the 1960s. Relocated in Housing and Development Board flats, urban kampong families were progressively integrated into the social fabric of the emergent nation-state. This study examines the pivotal role of an event, the great Kampong Bukit Ho Swee fire of 1961, in bringing about this transformation. The redevelopment of the fire site in the aftermath of the calamity brought to completion the British colonial regime’s ‘emergency’ programmes of resettling urban kampong dwellers in planned accommodation, in particular, of building emergency public housing on the sites of major fires in the 1950s. The PAP’s far greater political resolve, and the timing of and state of emergency occasioned by the scale of the 1961 disaster, enabled the government to rehouse the Bukit Ho Swee fire victims in emergency housing in record time. This in turn provided the HDB with a strategic platform for clearing other kampongs and for transforming their residents into model citizens of the nation-state. The 1961 fire’s symbolic usefulness extended into the 1980s and beyond, in sanctioning the PAP’s new housing redevelopment schemes. The official account of the inferno has also become politically useful for the government of today for disciplining a new generation of Singaporeans against taking the nation’s progress for granted. Against these exalted claims of the fire’s role in the Singapore Story, this study also examines the degree of actual change and continuity in the social and economic lives of the people of Bukit Ho Swee after the inferno. In some crucial ways, the residents continued to occupy a marginal place in society while pondering, too, over the unresolved question of the cause of the fire. These continuities of everyday life reflect the ambivalence with which the citizenry regarded the high modernist state in contemporary Singapore

    Classification of multiple arbitrary-order non-Hermitian singularities

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    We demonstrate general classifications of Riemann surface topology generated by multiple arbitrary-order exceptional points of quasi-stationary states. Our studies reveal all possible product permutations of holonomy matrices that describe a stroboscopic encircling of 2nd order exceptional points. The permutations turn out to be categorized into a finite number of classes according to the topological structures of the Riemann surfaces. We further show that the permutation classes can be derived from combinations of cyclic building blocks associated with higher-order exceptional points. Our results are verified by an effective non-Hermitian Hamiltonian founded on generic Jordan forms and then examined in physical systems of desymmetrized optical microcavities

    Inhibition of cyclooxygenase activity, platelet aggregation and thromboxane B₂ production by two environmental toxicants: m- and o-cresol

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    Chiu-Po Chan, Ho Yuan-Soon, Ying-Jen Wang, Wan-Hong Land, Lin-I Chen, Yi-Jane Chen, Bor-Ru Lin, Mei-Chi Chang, Jiiang-Huei Jen

    [[alternative]]A Study on Chang Hao

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    [[abstract]]上篇為張昊先生年譜,包括︰先生家系、居鄉里時期(一歲∼十五歲 ,1913∼1936年)、湖北時期(十六歲∼三十六歲,1937∼ 1946年)、 海外時期(三十六歲∼六十八歲,1947∼1979年)、返國定居時期(六十 八歲迄今,1979年∼)。下篇為張昊先生作品分析,先生的作曲歷程,依 地域可分為上海、外國(巴黎、義大利仙納城、德國柯隆)與台北三個時 期,截至1995年共有35首作品,而第三時期台北,為先生一生創作高峰。 筆者選其代表作品九首分析:(1)管絃樂曲:大理石花、華岡春曉、東 海漁帆(2)室內樂曲:梅山舞、茶山舞、深山古廟(3)合唱曲:西湖好 、關雎頌(4)協奏曲:小號協奏曲。最後結論將先生在國際漢學地位與 音樂界地位加以說明。 Part 1: The Chronicle History of Chang Hao Chang Hao's Family Pedigree、The Period during Which He Stayed at Home(Age 1-15;1913-1936)、The Period during Which He Was Educated in Hu-pei Province(Age 16-36;1937- 1947)、 The Period during Which He Stayed Overseas(Age 36- 68; 1947-1979)、 The Period during Which He Settles Down in His Mother Country(Age 68-now ;1979-now)﹒ Part 2:an Anlysis of Chang Hao's Compositions He's compositional process can be divided--according to various places--into the three stages:the first stage features the works he produced in Shang-hai,the second one refers to the works generated overseas(in Paris、in Italy、 in Germany), while the third one encompasses the compositions he submitted in Taipei﹒Up to 1995,he has produced thirty-five musical compositions,and the third stage of his production(in Taipei) was the time when he was most creative﹒In this study,Iam going to analyze nine major works of his:(1)Orchestral Music : Marble Flower﹔Early Spring in Hua-Gung﹔Fishing Boats in Dong-Hai(2)Chamber Music:Meiflormont Dance﹔Tea-Mount Dance﹔ Ancient Temple Deep in the Mountains(3)Chorus Music:How Nice Shi-hu is、 Hymn to Guan-ju(4)Concerto Music:Victoria Part 1: The Chronicle History of Chang Hao Chang Hao's Family

    Roles of Atypical Protein Kinase C in Lysophosphatidic Acid-Induced Type Ii Adenylyl Cyclase Activation in Raw 264.7 Macrophages

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    1 Lysophosphatidic acid (LPA) has been widely studied as a naturally occurring and multifunctional phospholipid messenger in diverse tissue and cell types and shown to inhibit adenylyl cyclase (AC) by a G protein- mediated mechanism.2 In type II AC-expressing mouse RAW 264.7 macrophages, we showed that LPA at 3-50 mu M increased cyclic AMP formation in a concentration-dependent manner, the effect being additive with that of forskolin or cholera toxin, and synergistic with that of prostaglandin El (PGE,) or isoproterenol.3 The potentiation effect of LPA was unaffected by the removal of serum or pertussis toxin treatment.4 Both colchicine and cytochalasin B potentiated the cyclic AMP response to PGE(1), the effect being additive to that of LPA.5 On studying the regulation of type II AC by protein kinase C (PKC), phorbol 12-myristate-13 acetate ( PMA) potentiated the PGE(1)-elicited cyclic AMP response, this effect being non -additive to that of LPA, suggesting that PKC activation was the common mechanism involved in AC potentiation by LPA and PMA.6 PKC inhibitor Ro 31 -8220, but not Go 6976, significantly inhibited the LPA-induced cyclic AMP potentiation.7 The potentiation effect of LPA was unaffected by long-term treatment with PMA, which resulted in the down-regulation of PKC alpha, beta I, beta II and PKC delta, but not PKC epsilon, mu, lambda and zeta.8 By in situ kinase assay, we found a marked increase in atypical PKC activity after LPA treatment.9 Taken together, we conclude that LPA can elicit a unique signalling cascade in RAW 264.7 macrophages and increase type II AC activity via the activation of atypical PKC

    Complex energy structures of exceptional point pairs in two-level systems

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    We investigate the topological properties of multiple exceptional points in non-Hermitian two-level systems, emphasizing vorticity as a topological invariant arising from complex energy structures. We categorize EP pairs as fundamental building blocks of larger EP assemblies, distinguishing two types: type-I pairs with opposite vorticities and type-II pairs with identical vorticities. By analyzing the branch cut formation in a two-dimensional parameter space, we reveal the distinct topological features of each EP pair type. Furthermore, we extend our analysis to configurations with multiple EPs, demonstrating the cumulative vorticity and topological implications. To illustrate these theoretical structures, we model complex energy bands within a two-dimensional photonic crystal composed of lossy materials, identifying various EP pairs and their branch cuts. These findings contribute to the understanding of topological characteristics in non-Hermitian systems. Copyright (c) 2025 EPLA All rights, including for text and data mining, AI training, and similar technologies, are reserved.

    시간지연 제어기법을 이용한 DC서보모터 강인제어 및 관측기/제어기 안정화에 관한연구

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    Recently the Time Delay Control(TDC) method has been proposed as a promising technique in the robust control area, where the plants have nonlinear dynamics with parameter variations and substantial disturbances are present. TDC method, however, requires the measurement of all the state variables, together with their derivatives. This requirement imposes a severe limitation on the applications to most real systems. In order to solve this measurement proble, we proposed an observer design method that can stably reconstruct the state variables and their derivatives. the stability of the overall system has analyzed and proved. Then for a simulation study, the controller/observer based on our design method has been applied to a nonlinear plant, the result of which confirmed that the controller/observer performs satisfactorily as predicted. Finally we made experimentations on a DC servo motor that is subject to substantial amount of inertia variations and external disturbances. the results showed that the controller/observer performs quite robustly under thos variations and disturbances, and is much less sensitive to sensor noise than the controller using numerical differentiations

    A Knowledge Distribution Model to Support an Author in Narrative Creation

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    Adjusting the knowledge of characters and the reader is a critical task for an author in narrative creation. Throughout a narrative, both characters and the reader experience events according to their own timelines and perspectives. They interpret information accumulated through their experience and update knowledge to the narrative-world which the author constructed. In this paper, we present a Knowledge Distribution Model which supports an author in finely controlling the knowledge of characters and the reader. Within the model, the Knowledge Structure is constructed by connecting event, information, and knowledge. The Knowledge State is evaluated as the degree of belief under the knowledge structure. We adopted a probabilistic reasoning model to calculate the knowledge state. The change in knowledge state, defined as Knowledge Flow, is visually presented to the author. We designed a GUI prototype to implement the proposed modeling process, and demonstrated the knowledge flow with an actual cinematic narrative
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